2 * Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* EVP_MD_CTX related stuff */
12 struct evp_md_ctx_st {
13 const EVP_MD *reqdigest; /* The original requested digest */
15 ENGINE *engine; /* functional reference if 'digest' is
19 /* Public key context for sign/verify */
21 /* Update function: usually copied from EVP_MD */
22 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
26 EVP_MD *fetched_digest;
29 struct evp_cipher_ctx_st {
30 const EVP_CIPHER *cipher;
31 ENGINE *engine; /* functional reference if 'cipher' is
33 int encrypt; /* encrypt or decrypt */
34 int buf_len; /* number we have left */
35 unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
36 unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
37 unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
38 int num; /* used by cfb/ofb/ctr mode */
39 /* FIXME: Should this even exist? It appears unused */
40 void *app_data; /* application stuff */
41 int key_len; /* May change for variable length cipher */
42 unsigned long flags; /* Various flags */
43 void *cipher_data; /* per EVP data */
46 unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
47 } /* EVP_CIPHER_CTX */ ;
49 struct evp_mac_ctx_st {
50 const EVP_MAC *meth; /* Method structure */
51 void *data; /* Individual method data */
54 struct evp_kdf_ctx_st {
55 const EVP_KDF_METHOD *kmeth;
56 EVP_KDF_IMPL *impl; /* Algorithm-specific data */
59 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
60 int passlen, ASN1_TYPE *param,
61 const EVP_CIPHER *c, const EVP_MD *md,
64 struct evp_Encode_Ctx_st {
65 /* number saved in a partial encode/decode */
68 * The length is either the output line length (in input bytes) or the
69 * shortest input line length that is ok. Once decoding begins, the
70 * length is adjusted up each time a longer line is decoded
74 unsigned char enc_data[80];
75 /* number read on current line */
80 typedef struct evp_pbe_st EVP_PBE_CTL;
81 DEFINE_STACK_OF(EVP_PBE_CTL)
83 int is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
85 #include <openssl/ossl_typ.h>
86 #include <openssl/core.h>
88 void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id,
89 const char *algorithm, const char *properties,
90 void *(*new_method)(int nid, const OSSL_DISPATCH *fns,
92 int (*upref_method)(void *),
93 void (*free_method)(void *),
94 int (*nid_method)(void *));